It seems that the quality of strike for 1910 halfcrowns could be variable. Here's my 1910 halfcrown.. Firstly the reverse is a better strike than the obverse and I would grade it as UNC. The obverse is a weaker strike but given the reverse you have to cut some slack as both sides of the coin should wear evenly. As a result I would give an overall grade of gEF for the coin. In summary a very nice coin. I think I would prefer this coin to the PCGS example.